Summary & Overview
CPT 86975: Serum Incubation with Single Drug for RBC Antibody Identification
CPT code 86975 describes a specialized immunohematology laboratory procedure in which a serum specimen is incubated with a single drug to prepare the sample for identification of antibodies to red blood cells. The test is clinically important for detecting drug-related or drug-dependent RBC antibodies that can affect transfusion compatibility and patient safety. Nationally, accurate billing and clinical use of this code support appropriate identification of hemolytic reactions and informed transfusion decisions.
Key payers addressed in this profile include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical purpose and typical settings for the service, plus an outline of common modifiers associated with laboratory billing (provided in the input). The publication provides benchmark and policy context where available and indicates when input data were not provided.
This overview equips laboratory managers, billing professionals, and policy analysts with the core clinical definition and payer landscape for CPT code 86975, clarifies typical sites of service, and directs readers to sections covering billing modifiers, coding relationships, and reimbursement considerations. Data not available in the input is explicitly noted where necessary.
Billing Code Overview
CPT code 86975 describes a laboratory procedure in which a lab analyst incubates a patient serum sample with a single drug to prepare the specimen for identification of antibodies to red blood cells (RBCs). This process is used as part of immunohematology testing to detect drug-related or drug-dependent RBC antibodies.
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Service type: Laboratory immunohematology test involving serum incubation with a single drug
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Typical site of service: Hospital or independent clinical laboratory; may be performed in transfusion medicine or blood bank settings
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 45-year-old patient with a recent history of transfusion and a rising indirect bilirubin level presents for evaluation of suspected hemolytic transfusion reaction. The clinical laboratory receives a serum sample from the inpatient ward labeled for investigation of alloantibodies to red blood cells. The laboratory technologist performs antibody identification procedures beginning with incubation of the patients serum with a single reagent red cell or drug-treated red cell to detect antibodies against RBC antigens. The typical workflow includes specimen accessioning, sample centrifugation, preparation of reagent cells (or drug-treated cells), incubation at specified temperature and time, observation for agglutination or hemolysis, and documentation of results. Results are reported to the blood bank physician and the clinical team to guide transfusion decisions and further serologic testing (such as panel identification or eluate studies) if the test is positive.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the physicianreview/reporting portion separate from the laboratory technical work. |
59 | Distinct procedural service |